CN103457350A - Automatic throw-in equipment of emergency power supply - Google Patents
Automatic throw-in equipment of emergency power supply Download PDFInfo
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- CN103457350A CN103457350A CN2013103975386A CN201310397538A CN103457350A CN 103457350 A CN103457350 A CN 103457350A CN 2013103975386 A CN2013103975386 A CN 2013103975386A CN 201310397538 A CN201310397538 A CN 201310397538A CN 103457350 A CN103457350 A CN 103457350A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses automatic throw-in equipment of an emergency power supply. Power supply connectors of control ends of starting coils and reset coils of a double-position relay are connected to a secondary-side circuit of a voltage transformer PT of a main power supply and a secondary-side circuit of a voltage transformer PT of the emergency power supply respectively, the secondary-side circuit of the voltage transformer PT of the main power supply is electrically connected with a main power supply bus 110KV-4 through normally-open contacts of a two-position interlocking relay SWJ, the secondary-side circuit of the voltage transformer PT of the emergency power supply is electrically connected with an emergency power supply bus 110KV-5 through normally-open contacts of the two-position interlocking relay SWJ, and a parallel operation mode and a march-past operation mode of 110kV voltage transformers PT are further achieved. The automatic throw-in equipment of the emergency power supply has the advantages of effectively solving design defects of primary equipment, improving operation reliability of a power supply system, preventing major accidents, like protection operation rejection and mal-operation, caused by misoperation, meeting reliable power supply requirements of important users, and improving work levels of the relay protection major.
Description
Technical field
The present invention relates to the power transformation operation professional skill field of electric power system; Particularly relate to a kind of after electric power system fault or other reasons cause working power commonly used to disconnect, the backup auto-activating device that can rapidly stand-by power supply be devoted oneself to work automatically.
Background technology
Along with the up-to-dateness of Chinese people people productive life improves day by day, people are also being doubled to demand and the degree of dependence of electric power, requirement to the quality of power supply is also stricter, and supply and distribution also constantly strides forward to the target of automation, unattended operation, Long-distance Control, uninterrupted power supply in every field.Some power consumer especially seems more outstanding to the requirement of uninterrupted power supply, therefore, the mutual switching of various power supplys, the high reliability that guarantees the uninterrupted power supply of power supply and power supply has become the pith of protection and control loop in modern distribution engineering.
In the power supply electric power system, backup auto-activating device is after the station-service working power disappears, the device that stand-by power supply drops into automatically.Backup auto-activating device is after electric power system fault or other reasons cause working power commonly used to disconnect, can rapidly the power supply of stand-by power supply or stand-by equipment or other normal operations be devoted oneself to work automatically, make former working power a kind of automatic control equipment that can restore electricity rapidly with the user.
When the 110KV of transformer station part during in initial design the voltage transformer pt of 110KV be arranged on bus, but due to the compact distance of COMPASS combined electrical apparatus construction of switch not, and the voltage transformer pt reconfiguration of 110KV has been arrived to the inlet wire side of 110KV.Like this, the prepared auto restart logic that the mode of connection of voltage transformer pt just can not meet the 110KV internal bridge has required, and also can not realize the function of prepared auto restart.If do not changed causing the malfunction of 110KV backup auto-activating device or tripping, brought about great losses to electrical network.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of and can meet the automatic throw-in equipment of emergency power supply that 110KV internal bridge logic requires.
The technical solution adopted in the present invention is, a kind of automatic throw-in equipment of emergency power supply, comprise, main power source, the secondary side circuit of main power voltage instrument transformer PT, the main power source circuit breaker, the main power source bus, bus connection switch, stand-by power supply, the secondary side circuit of backup power source voltage instrument transformer PT, auxiliaries-supply circuit-breaker and stand-by power supply bus, described main power source is electrically connected to the main power source bus by the main power source circuit breaker, described stand-by power supply is electrically connected to by auxiliaries-supply circuit-breaker and stand-by power supply bus, described main power source bus is electrically connected to the stand-by power supply bus by bus connection switch, also comprise, two-position interlock relay SWJ, the actuating coil of described two-position interlock relay SWJ and an end of resetting coil control end are controlled power supply with described bus connection switch automatic bus and are electrically connected to, the other end of described two-position interlock relay SWJ actuating coil and resetting coil control end is electrically connected to the end of the normally opened contact DL1 of described bus connection switch and the end of normally-closed contact DL2 respectively, the DL1 other end of the normally opened contact of described bus connection switch and the other end of normally-closed contact DL2 are electrically connected to the automatic bus DC control supply of bus connection switch respectively, the two ends of the controlled normally opened contact of described two-position interlock relay SWJ are electrically connected to one group of three-phase electricity A630 B630 C630 after main power source circuit breaker switching and another group three-phase electricity A640 B640 C640 after the auxiliaries-supply circuit-breaker switching respectively, when described bus connection switch in co-bit, main power source circuit breaker or auxiliaries-supply circuit-breaker are when dividing position, the DL1 closure of the normally opened contact of described bus connection switch, two-position interlock relay SWJ action, three-phase electricity A630 B630 C630 and the operation of three-phase electricity A640 B640 C640 automatic Synchronization, when described bus connection switch in minute the position, main power source circuit breaker and auxiliaries-supply circuit-breaker are in co-bit, the normally-closed contact DL2 closure of described bus connection switch, interlock relay SWJ action in two-position is returned, three-phase electricity A630 B630 C630 and the automatic fanout operation of three-phase electricity A640 B640 C640.
The model of described two-position interlock relay SWJ is DSC-11.
The invention has the beneficial effects as follows, adopt the technical scheme of two-position interlock relay, the mode of connection of voltage transformer pt secondary side wiring is improved, met the logic requirement of complicated backup auto-activating device, solve the design defect of primary equipment with not enough, improved the electric power system reliability of operation; The generation of the major accidents such as the protection tripping of having avoided causing because of misoperation, malfunction; Effectively improve the reliability of microcomputer backup auto-activating device, thereby guaranteed the reliability service of power supply grid, met the reliable electricity consumption of responsible consumer, improved the working level of relaying protection specialty.
The accompanying drawing explanation
Fig. 1 is existing automatic throw-in equipment of emergency power supply system electrical schematic diagram;
Fig. 2 is the electrical schematic diagram of the controlled part of automatic throw-in equipment of emergency power supply system two-position interlock relay of the present invention;
Fig. 3 is the electrical schematic diagram of automatic throw-in equipment of emergency power supply of the present invention two-position interlock relay power unit;
In figure:
145, bus connection switch
111, main power source circuit breaker 112, auxiliaries-supply circuit-breaker
1, the DC control supply 2 of mother automatic bus, mother automatic bus power supply
110KV-4, main power source bus 110KV-5, stand-by power supply bus.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1 to Figure 3, automatic throw-in equipment of emergency power supply of the present invention, comprise, main power source, the secondary side circuit of main power voltage instrument transformer PT, main power source circuit breaker 111, main power source bus 110KV-4, bus connection switch 145, stand-by power supply, the secondary side circuit of backup power source voltage instrument transformer PT, auxiliaries-supply circuit-breaker 112 and stand-by power supply bus 110KV-5, described main power source is electrically connected to main power source bus 110KV-4 by main power source circuit breaker 111, described stand-by power supply is electrically connected to by auxiliaries-supply circuit-breaker 112 and stand-by power supply bus 110KV-5, described main power source bus 110KV-4 is electrically connected to stand-by power supply bus 110KV-5 by bus connection switch 145, also comprise, two-position interlock relay SWJ, the actuating coil of described two-position interlock relay SWJ and an end of resetting coil control end are controlled power supply 2 with described bus connection switch 145 automatic bus and are electrically connected to, the other end of described two-position interlock relay SWJ actuating coil and resetting coil control end is electrically connected to the end of the normally opened contact DL1 of described bus connection switch 145 and the end of normally-closed contact DL2 respectively, the DL1 other end of the normally opened contact of described bus connection switch 145 and the other end of normally-closed contact DL2 are electrically connected to the automatic bus DC control supply 1 of bus connection switch 145 respectively, the two ends of the controlled normally opened contact of described two-position interlock relay SWJ are electrically connected to one group of three-phase electricity A630 B630 C630 after main power source circuit breaker 111 switching and another group three-phase electricity A640 B640 C640 after auxiliaries-supply circuit-breaker 112 switchings respectively, when described bus connection switch 145 in co-bit, main power source circuit breaker 111 or auxiliaries-supply circuit-breaker 112 are when dividing position, the DL1 closure of the normally opened contact of described bus connection switch 145, two-position interlock relay SWJ action, make three-phase electricity A630 B630 C630 and three-phase electricity A640 B640 C640 automatic Synchronization meet the logic requirement of mutual throwing mode, when described bus connection switch 145 in minute the position, main power source circuit breaker 111 and auxiliaries-supply circuit-breaker 112 are when co-bit, the normally-closed contact DL2 closure of described bus connection switch 145, interlock relay SWJ action in two-position is returned, make three-phase electricity A630 B630 C630 and the automatic fanout operation of three-phase electricity A640 B640 C640 meet the logic requirement of hauling oneself willingly into mode, from mutual throwing mode, be output as three-phase electricity A B C.
The model of described two-position interlock relay SWJ is DSC-11.
The voltage transformer pt of 110KV transformer station, in 110KV inlet wire side, can not meet the wiring principle of 110KV microcomputer prepared auto restart design, needs to change the microcomputer backup auto-activating device, and buy a set of new device, needs the fund that number is larger.In order can cost-savingly to increase economic efficiency, by transformation voltage transformer pt loop secondary connection, primary voltage instrument transformer PT is transformed into to bus-bar potential transformer PT, to meet the prepared auto restart function of power supply.
In the voltage transformer pt secondary side circuit of main power source and stand-by power supply, the confession electric contact of the actuating coil of access two-position relay and resetting coil control end, and by the normally opened contact of two-position interlock relay SWJ, the voltage transformer pt secondary side circuit of main power source and stand-by power supply is realized being electrically connected to main power source bus 110KV-4 and stand-by power supply bus 110KV-5 respectively, further realize the block form of voltage transformer pt secondary side of 110KV and the operational mode of march-past.
Two-position relay is by the switching of 110KV bus connection switch 145, and what automatically adapt to the 110KV internal bridge throws mode mutually from administration.
The present invention adopts the technical scheme of two-position interlock relay, the mode of connection of voltage transformer pt secondary connection is improved, meet the logic requirement of complicated backup auto-activating device, solved the design defect of primary equipment with not enough, improved the electric power system reliability of operation; The generation of the major accidents such as the protection tripping of having avoided causing because of misoperation, malfunction; Effectively improve the reliability of automatic switchover device, thereby guaranteed the reliability service of power supply grid, met the reliable electricity consumption of responsible consumer, improved the working level of relaying protection specialty.
The present invention can also be widely used in, in the Transfomer Substation Reconstruction work of similar design and Connection Mode, for other power supply units provide good technical support and enlightenment, having strengthened the equipment reliability of operation, has effectively improved economic benefit.
It is worthy of note; protection scope of the present invention is not limited to above-mentioned instantiation mode; according to basic fundamental design of the present invention; also available essentially identical structure; can realize purpose of the present invention; as long as those of ordinary skills are without the process creative work, the execution mode that can associate, all belong to protection scope of the present invention.
Claims (2)
1. an automatic throw-in equipment of emergency power supply, comprise, main power source, the secondary side circuit of main power voltage instrument transformer PT, main power source circuit breaker (111), main power source bus (110KV-4), bus connection switch (145), stand-by power supply, the secondary side circuit of backup power source voltage instrument transformer PT, auxiliaries-supply circuit-breaker (112) and stand-by power supply bus (110KV-5), described main power source is electrically connected to main power source bus (110KV-4) by main power source circuit breaker (111), described stand-by power supply is electrically connected to by auxiliaries-supply circuit-breaker (112) and stand-by power supply bus (110KV-5), described main power source bus (110KV-4) is electrically connected to stand-by power supply bus (110KV-5) by bus connection switch (145), it is characterized in that, also comprise, two-position interlock relay SWJ, the actuating coil of described two-position interlock relay SWJ and an end of resetting coil control end are controlled power supply (2) with described bus connection switch (145) automatic bus and are electrically connected to, the other end of described two-position interlock relay SWJ actuating coil and resetting coil control end is electrically connected to the end of the normally opened contact DL1 of described bus connection switch (145) and the end of normally-closed contact DL2 respectively, the DL1 other end of the normally opened contact of described bus connection switch (145) and the other end of normally-closed contact DL2 are electrically connected to the automatic bus DC control supply (1) of bus connection switch (145) respectively, the two ends of the controlled normally opened contact of described two-position interlock relay SWJ are electrically connected to one group of three-phase electricity A630 B630 C630 after main power source circuit breaker (111) switching and another group three-phase electricity A640 B640 C640 after auxiliaries-supply circuit-breaker (112) switching respectively, when described bus connection switch (145) in co-bit, main power source circuit breaker (111) or auxiliaries-supply circuit-breaker (112) are when dividing position, the DL1 closure of the normally opened contact of described bus connection switch (145), two-position interlock relay SWJ action, three-phase electricity A630 B630 C630 and the operation of three-phase electricity A640 B640 C640 automatic Synchronization, when described bus connection switch (145) in minute the position, main power source circuit breaker (111) and auxiliaries-supply circuit-breaker (112) are in co-bit, the normally-closed contact DL2 closure of described bus connection switch (145), interlock relay SWJ action in two-position is returned, three-phase electricity A630 B630 C630 and the automatic fanout operation of three-phase electricity A640 B640 C640.
2. automatic throw-in equipment of emergency power supply according to claim 1, is characterized in that, the model of described two-position interlock relay SWJ is DSC-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397538.6A CN103457350B (en) | 2013-09-04 | 2013-09-04 | A kind of automatic throw-in equipment of emergency power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397538.6A CN103457350B (en) | 2013-09-04 | 2013-09-04 | A kind of automatic throw-in equipment of emergency power supply |
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| Publication Number | Publication Date |
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| CN103457350A true CN103457350A (en) | 2013-12-18 |
| CN103457350B CN103457350B (en) | 2015-10-21 |
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| CN201310397538.6A Active CN103457350B (en) | 2013-09-04 | 2013-09-04 | A kind of automatic throw-in equipment of emergency power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449673A (en) * | 2015-12-16 | 2016-03-30 | 广东电网有限责任公司中山供电局 | Control method and system for converting paralleling operation into separated operation for dual-bus section substation |
| CN105552884A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Method and system for controlling double-busbar substation from parallel operation to split operation |
| CN105552883A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Control method and system for converting to paralleling operation from splitting operation of three-bus segmented substation |
| CN107492947A (en) * | 2017-07-26 | 2017-12-19 | 国网山东省电力公司日照供电公司 | A kind of dual transformer control method and system |
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| CN201726149U (en) * | 2009-10-15 | 2011-01-26 | 金华电业局 | Measure and control device for synchronous voltage auto-selection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449673A (en) * | 2015-12-16 | 2016-03-30 | 广东电网有限责任公司中山供电局 | Control method and system for converting paralleling operation into separated operation for dual-bus section substation |
| CN105552884A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Method and system for controlling double-busbar substation from parallel operation to split operation |
| CN105552883A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Control method and system for converting to paralleling operation from splitting operation of three-bus segmented substation |
| CN105552884B (en) * | 2015-12-16 | 2018-01-16 | 广东电网有限责任公司中山供电局 | Double-bus transformer station by turning the control method and system of fanout operation side by side |
| CN105449673B (en) * | 2015-12-16 | 2019-01-04 | 广东电网有限责任公司中山供电局 | Double-bus is segmented substation by turning the control method and system of fanout operation side by side |
| CN107492947A (en) * | 2017-07-26 | 2017-12-19 | 国网山东省电力公司日照供电公司 | A kind of dual transformer control method and system |
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| Publication number | Publication date |
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| CN103457350B (en) | 2015-10-21 |
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